/*
 * Copyright (C) 2008 by Xume.
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.xume.critann.jpa.criteria;

/**
 * $Id: Order.java 15 2008-10-12 10:46:49Z jsiebens $
 * 
 * @author Johan Siebens
 */
public class Order {

	public static Order asc(String propertyName) {
		return new Order(propertyName, true);
	}

	public static Order desc(String propertyName) {
		return new Order(propertyName, false);
	}

	private boolean ascending;

	private String propertyName;

	Order(String propertyName, boolean ascending) {
		this.propertyName = propertyName;
		this.ascending = ascending;
	}

	public String toQueryFragment(QueryContext context) {
		return context.getEntityAlias() + '.' + propertyName + ' ' + (ascending ? "asc" : "desc");
	}
}
